The Afterlife changes to the pack successfully improved the 1984 made in a garage/credible/dangerous look.
With FE It's not only the color but also the enlarged barrel, the bottom heavy look of the pack, the weird three prong cyclothong, etc.
On Reddit and Facebook from what I've seen the majority of people aren't in favor of the FE changes (as opposed to say AF) and I think I know why.
It's not just the yellow accents. GB1&2 had a timeless look that was more real/gritty/credible.
I mean, these are pictures of actual
Delta Force special forces a DECADE after Ghostbusters. Squint your eyes and it's the same Ghostbusters 1984 colors, tools and accents.
No bright colors, no over the top huge barrels, no highlights, the tools are just real, believable looking black equipment that gets the job done. The whole thing looks credible.
That's what made 1984/89 GB timeless. You have actual special forces using the same gritty and real look decades later.
But franchises need change. So they try to change and modernize, etc and we get changes.
I'm not against these changes, (and I think the FE changes are lightyears beyond what we saw in ATC). I just prefer the ultra realistic, real world believable, Dark Knight kind of look of the originals and Afterlife. But that's me. Just my own opinion.
Like I said before I'm happy we can retire the OG look now and have them as icons of what was the genius prop and costume design of 1984.
Thankfully we can all enjoy these exciting additions that each new movie will bring and pick and choose what appeals to us individually.